<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script src="vue.min.js"></script>

    <div id="app">
        <div v-for="user in userList">
            {{user.name}} -- {{user.age}}
        </div>

        <div v-for="(user,index) in userList">
            {{index}} --{{user.name}} -- {{user.age}}
        </div>
    </div>

    <script>
        new Vue({
            el: '#app',
            data: {
                userList: [
                    {"name":"小黑","age":18},
                    {"name":"小白","age":20}
                ]
            }
        })
    </script>
</body>
</html>